Improvement in tenoning-maohines



uitrit gisten @strut 'ffice WILLIAM MCKNIG'ET, or GLEAEEIELD, PENNSYLVANIA, ASSIGN'OR fr0 HIM-z SELF', JOHN H. FULFOED, AND DANIEL W. MCoUnDY, 0E SAME IPLACE.

Lettera Patent No. 82,143, dated September 15, 1868.

IMPROVEMENT IN TENONING-MAGHINES.

TO ALL WHOM IT MAY CONCERN':

Bc it known that I, WILLIAM McKNIsIIr, of Clearfield, county of ClearfielrLand State of Pennsylvania, have invented a new and improved Tenoning-Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the saine, reference being had to the accompanying' drawings forming a part of this specification.

l Figure'lis a topview of my invention.

Figure2 is a rear elevation of the same.

Figure 3 is u detail side view of the plane.

Eigure 4 is a cross-section of the plane, through the line xvx, iig. 3.

'i Similar letters of reference'indicate corresponding parts.

The object of this invention is to provide an apparatus by means of which tenons of any suitable angle and slope, both in the tenon and shoulder of the same, may be cut in an expeditious and accurate manner.

It consists of a frame, having devices for adjusting and holding the wood to be eut in such a. manner that the tenon, when out, will be straight, or tapered,or the shoulders of the same will be straight, or mitred, as may be desired, and having also suitable guides for the plane.

It further consists of a tenoning-plane, having a shear-iron, in combination with the frame'above mentioned.

In the drawings, A B C D E is the general frame, bearing the adjusting-devices.

The piece of Wood, as a spoke or sash-frame, which is to be tenoned, is placed upon the restplates a a and' under the part C, which is recessed for that purpose. g 4

The opposite ends, d, of the wood rest on the part bland against the upright parts of the slotted sliding rest, d ci CZ d, which latter slides to and fro on the part B to adjust the wood to give the proper mitre-slope to the shoulder of the tenen.

This slide-rest is clamped by a. set-screwor burr, e, when adjusted.

When the tenon is not to be cut tapering, the adjustable rest b, which has vertical slots and clamp-screws, vL I, for the purpose, is'raised to bring-the said rest b on a level with the rest-plate a, on which the front end of the Wood rests. v

These plates a a are also adjustable vertically by screws or other equivalent devices, so that each tenon will be cut to a certain uniform depth for which the plates are set, and if the tcnon is to be straight or tapering, the bar-rest 6 is adjusted down or. up to eiect that object.

g g are clamp-screws, for holding the wood down upon the rest-plates a a, and the lower ends of these clamp-screws terminate in clamp-plates, (shown dotted in fig. 2,) which bear upon the wod without marring it.

The plane runs on the parts E E, and is kept against the part C by a guide-strip, G.

The plane Vhas an oblique recess, m, which passes clear through the stock I, from side to side, so that the shavings can escape freely therefrom, and also that the plane-bit may be permitted to cut down into the wood. leaving a smooth shoulder.

The vertical cutter-hing', marks the shoulder in advance of the bit lc, thus cutting the wood across the grain, and making a clean shoulder on the tenen, as aforesaid.

The strips J and Jslide in contact with the guide-strip G and the upper edge of the part C, and thus serve to guide the plu-ne more steadily.

The clamping-devices may be variously modified, as also the forms of the rests, and I desire to be understood as not limiting myself to the precise construction of such devices. Y

YHaving'tlius described my invention, what I claim as new, and desire tosecure by Letters Patent, is-l The arrangement of the vguide C, rest-plates a, adjustable rest b, and sliding rest d, upon the bed, to operate in connection with a`plane, as herein shown and described. I

' WILLIAM McmlIGHT.

` Witnesses:

JonN W. SHUG'EET, EDW. McGARI/EY. 

